Did Einstein say, 'Insanity is doing the same thing over and over again and expecting different results'?

Online users have for years — "over and over again" — shared the quote with the famous physicist's name and image.
Vail Daily

Armijo: The definition of insanity

A quote that is typically attributed to Einstein states “The definition of insanity is doing the same thing over and over and expecting different results.” As a success coach, I see many people ...
c-span

User Clip: Definition of Insanity

2017-08-06T13:55:10-04:00https://images.c-span.org/Files/ce2/20170806135512002_hd.jpgQuote often attributed to Einstein as his definition of insanity. Quote often ...
The Salt Lake Tribune

Letter: It is simply insanity to continue to pursue the mirage of “trickle-down” economics. The data is clear.

What is the definition of insanity? A popular quote — attributed to Albert Einstein but most likely from author Rita Mae Brown (novel “Sudden Death” published in 1983; character of Jane Fulton) — ...
Hook'em Headlines on MSN

Sarkisian drops a postgame quote that's basically the definition of 'insanity'

Every time Sark gives a postgame quote like the one above, the word "insanity" pops into fans' minds. He continues to do the exact same things each week and expects something to c ...
The New York Times

'The definition of insanity'

How does that old quote go? The definition of insanity is doing the same thing over and over and expecting different results? By those standards Italy's defending of corners is certainly insane. The ...